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Finding the Fourth Proportional to 239.62, 357.71 and 222.70

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Solution

The fourth proportional to 239.62, 357.71 and 222.70 is: 332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.62 : 357.71 = 222.70 : x
  2. Step 2: Convert to fraction form
    239.62/357.71 = 222.70/x
  3. Step 3: Cross multiply
    239.62x = 357.71 × 222.70
  4. Step 4: Simplify right side
    239.62x = 79,662.02
  5. Step 5: Solve for x
    x = 79,662.02/239.62
  6. Step 6: Final answer
    x = 332.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.